JPH04371360A - Device for controlling casting machine - Google Patents

Abstract

PURPOSE:To simplify wiring system with common using of the wiring and to facilitate the setting and the maintenance by separating a large part of the wiring system in a control device to uses for signal and for electric power. CONSTITUTION:Working command from a main control device 17 is outputted to the signal wire 43 based on the setting information from an operating panel 16. Each auxiliary control device 41, 42 supplies electric power from electric source wire 44 to working unit 21-25 corresponding to this command based on the working command from the signal wire 43, to execute the prescribed work. Further, each auxiliary control device 41, 42 returns the detected signal from the working unit 21-25 back to the operating panel 16 and the main control device 17 through the signal wire 43. Therefore, central control in a die casting machine 20 can be executed and also, the wirings from the main control device 17 to each auxiliary control device 41,42 can be simplified. On the other hand, by corresponding to plural working units, number of the auxiliary control devices 44, 42 can be reduced and the equipment can be simplified.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control system for a casting machine, and more particularly to the simplification of a mechanism when centrally controlling a casting machine composed of a plurality of operating units.

0002

BACKGROUND ART Conventionally, casting has involved various operations such as mold clamping and molten metal filling, and these operations have been realized by a plurality of operation units in charge of each operation. for example,
A die casting machine that performs die casting is composed of a mold clamping unit, a core unit, an injection unit, an extrusion unit, a hot water supply unit, a spray unit, an unloading unit, a trimming press, a robot interface, and the like.

[0003] These operating units use solenoids, motors, etc. to perform individual operations, and even when hydraulic pressure or pneumatic pressure is used, the control is performed by electromagnetic valves, etc. The elements are connected to an external control device and are operated by operating power appropriately supplied from the control device. In addition, each operating unit uses sensors that detect state variables such as temperature and pressure, and limit switches that detect operating positions, and detection signals from these detection elements are returned to the control device as electrical variables. It is now possible to

Incidentally, in recent years, in order to increase work efficiency, efforts have been made to integrate and unify operations and monitoring, and even in die-casting machines, a plurality of operating units are centrally controlled.

For example, as shown in FIG. 3, when a die casting machine 90 has a plurality of operating units 91 to 94, a large number of wirings 81 to 94 from each drive element A and detection element S are connected to each other.
84 are appropriately extended together with multi-core wiring 85 or the like, and all of the driving elements A 1 and detection elements S 2 are directly connected to the central control panel 80 . Die casting machine 90 like this
Then, the centralized control panel 80 determines the operation to be performed by each of the operation units 91 to 94 based on the setting operation on the operation panel 86, drives each drive element A using electric power from the power supply 87, and drives each detection element Make adjustments referring to S. As a result, each of the operating units 91 to 94 is centrally controlled.

[0006]

However, in the centralized control as shown in FIG. There is a problem in that connection work during installation and maintenance and inspection work are unavoidably complicated.

[0007] In addition, each operating unit is installed in a physically separated state in each part of the die-casting machine, and the wiring from each unit to the central control panel becomes long, which reduces the space occupied by the wiring and wastes wiring materials. The problem is that it is large.

Furthermore, the longer wiring from each operating unit to the central control panel causes a loss in the power supplied to the driving elements, causing an error in the detection signal voltage returned from the detection element to the central control panel. There are other problems.

An object of the present invention is to provide a control device for a casting machine that can simplify wiring when centralizing control.

0010

[Means for Solving the Problems] The present invention is a control device for a casting machine constituted by a plurality of operation units for performing a casting operation, which includes a main control device that outputs operation commands to each operation unit; a sub-control device that is installed for each predetermined number of operating units and controls the operation of the corresponding operating unit by supplying power from the outside based on an external operating command; and a sub-control device that controls the operating commands from the main controller. It is characterized by having a signal line for transmitting to the device and a power supply line for supplying power necessary for the operation of each operating unit to the sub-control device.

[0011] Here, the sub-control device may be one that collectively controls a plurality of related or nearby operating units, or may be installed to correspond to each operating unit individually.

[0012] Furthermore, it is desirable that the sub-control device multiplexes signals returned from detection elements etc. provided in each corresponding operation unit and sends them back to the main control device via a signal line.

[0013] The signal line connecting the main control device and each sub-control device may be an ordinary conductor cable, or may be an optical fiber or a wireless communication system.

Furthermore, the connection between the main control device and the sub-control devices may be such that each sub-control device is individually connected to a bus line from the main control device, or the main control device and each sub-control device are individually connected. Any suitable format may be adopted.

[0015]

[Operation] In the present invention, the main control device outputs operation commands according to the settings etc. to the signal line, and each sub-control device outputs the operation commands from the power supply line based on the commands to its corresponding operation unit. Distributes and supplies power to operate each operating unit. Therefore, there is no need to distribute power from the main control device to each operation unit individually, the power supply line can be shared with each operation unit, and the signal line only needs to be able to transmit operation commands, so the signal Wiring can be shared by multiplexing, etc., and the wiring between the main control device and the sub-control devices can be greatly simplified. In this way, by placing the sub-control device near each operating block, it is possible to greatly simplify the wiring system even when performing centralized control from the main control device at a remote location, thereby achieving the above objective. be done.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, a control device 10 of this embodiment performs centralized control of a die-casting machine 20. As shown in FIG.

The die-casting machine 20 has a plurality of operation units 21 to 25 that perform casting operations such as mold clamping and injection, and each operation unit 21 to 25 has an appropriate number of units necessary for performing individual operations. Drive element A and detection element S
It is equipped with

The control device 10 controls each operation unit 21 to 2.
5, one operation panel 16, one main controller 17, one power supply 18, and one signal line 31 and one power supply line 32.

The signal line 31 is a digital signal wiring arranged from the main control unit 17 via the operation panel 16 to each sub-control unit 15 to 11, and each device 11 to 17 connects the signal line 31 to a bus. They are interconnected in a chain-like fashion.

The power line 32 runs from the power source 18 to the main control device 1.
7 and the operation panel 16 to each of the sub-control devices 15 to 11.
17 are individually supplied with necessary power from the power line 32.

The operation panel 16 is configured to appropriately convert setting operations and the like by an external operator and send them to the signal line 31, as well as extract detection signals and the like sent to the signal line 31 and display them. There is.

The main controller 17 outputs operation commands to the signal line 31 to cause each of the operation units 21 to 25 to perform necessary operations in response to setting information signals sent from the operation panel 16 through the signal line 31. Further, the detection signal sent to the signal line 31 is taken out to adjust operation commands for each of the operation units 21 to 25.

The sub-control devices 11-15 are connected to the drive element A and the detection element S of the corresponding operation units 21-25 by individual wiring lines 33, 34, respectively. Then, it takes in the operation command corresponding to itself from among the operation commands outputted from the main controller 17 to the signal line 31, and supplies power from the power supply line 32 through the wiring 33 to drive the drive element A.
Activate. Further, the detection value from the detection element S 2 sent from the wiring 34 is converted into the appropriate format and returned to the signal line 31 .

In this embodiment, the operation panel 1
6 to make appropriate settings and instruct to start the operation, these instructions and settings are transmitted to the main controller 17 through the signal line 31, and the main controller 17 outputs operation commands to each of the operating units 21 to 25 to the signal line 31. be done. Then, each sub-control device 11 to 15 connects the power line 32 based on the operation command.
is supplied to the wiring 33 to operate each drive element A, causing each operation unit 21 to 25 to perform a desired operation.

Furthermore, when the detection values from the detection elements S of each of the operating units 21 to 25 are sent through the wiring 34, each of the sub-controllers 11 to 15 converts the received detection values into appropriate formats and returns them to the signal line 31. . The detection signal returned to the signal line 31 is taken out by the control panel 16 and displayed as appropriate, and is also taken out by the main controller 17 and used as a feedback signal for control.

In this embodiment, the die-casting machine 2 is controlled by operation from the operation panel 16 of the control device 10.
Each of the operating units 21 to 25 of 0 can be centrally controlled, and integrated and unified control, monitoring, and management can be performed.

At this time, in the control device 10, since the power adjustment for the drive element A of each operation unit 21-25 is performed by each sub-control device 11-15, so-called analog type control wiring is connected to each sub-control device 11. ~15
Wiring 33, 34 between and each operation unit 21 to 25
Digital control wiring can be used between the main control device 17 and each of the sub-control devices 15 to 11.

Therefore, the wiring between each operating unit 21 to 25 and each subcontrol device 11 to 15 is shortened, so power loss and signal deterioration can be prevented, and the main control device 1
7 and each of the sub-control devices 15 to 11 are digital signals, so deterioration of operation commands and detection signals is less likely to occur, and control can be made more accurate.

Furthermore, from the main control device 17 to each sub-control device 1
Between 5 and 11, it is easy to multiplex operation commands to each operation unit 21 to 25, and the signal line 31 can be shared for transmission. Therefore, it is possible to connect the main control device 17 to each of the sub-control devices 15 to 11 using only one signal line 31 and power line 32, and the wiring system for the control device 10 can be greatly simplified. Can be done.

Furthermore, since each sub-control device 11-15 is installed to correspond to each operating unit 21-25, each sub-control device 11-15 is connected to each operating unit 21-25.
5, and the wiring 33 and 34 that need to be individually connected to each drive element A and detection element S can be kept to a minimum length, and the wiring system can be further simplified. .

By greatly simplifying the wiring system as described above, installation and maintenance work can be simplified, and the necessary wiring materials, wiring space, and other wiring-related equipment can be reduced, and the control device 10 can be made smaller and the cost can be reduced. down can be achieved.

FIG. 2 shows another embodiment of the invention. In FIG. 2, a die casting machine 20 of this embodiment is shown.
has operating units 21 to 25 similar to those of the above embodiment,
The control device 40 has an operation panel 16, a main control device 17, and a power source 18 similar to those in the previous embodiment, but sub-control devices 41, 4
The installation state of No. 2 and the installation form of the signal line 43 and power line 44 are different from those of the previous embodiment.

The sub-control devices 41 and 42 are installed corresponding to a plurality of operation units, and the sub-control device 41 is connected to wirings 33 and 34 from the drive elements A and detection elements S of the operation units 21 to 23. Wires 33 and 34 from the drive elements A and detection elements S of the operation units 24 and 25 are connected to the sub-control device 42.

The signal line 43 is not a chain-like wiring but a branched digital signal wiring, and interconnects the main control device 17 and each of the sub-control devices 41 and 42. In addition, the main control device 1
7 and the operation panel 16 are connected by another signal line 45.

The power supply line 44 is not a chain but a branch type power supply wiring, and the power from the power supply 18 is connected to the operation panel 16,
It is supplied to the main control device 17 and each sub-control device 41, 42.

In this embodiment as well, the same operation as in the previous embodiment is performed. That is, the main controller 17 outputs an operation command to the signal line 43 based on the setting information from the operation panel 16, and each sub-control device 41, 42 responds to the operation command based on the operation command from the signal line 43. Power is supplied from the power supply line 44 to the operating units 21 to 25 to cause them to perform the desired operations. Further, each sub-control device 41, 42 has operation units 21 to 42.
A detection signal from 25 is returned to operation panel 16 and main controller 17 through signal line 43.

Therefore, according to this embodiment, the same centralized control as in the previous embodiment can be performed, and the wiring from the main control device 17 to each of the sub-control devices 41 and 42 can be simplified.

On the other hand, in this embodiment, the number of sub-control devices 41 and 42 can be reduced by making them compatible with a plurality of operating units, and the equipment can be simplified. Furthermore, by making the signal line 43 and the power supply line 44 branched, the sub-control device 41,
By making the parts close to 42 individual, it is possible to easily handle them during installation and equipment modification.

It should be noted that the present invention is not limited to the above embodiments, but also includes the following modifications. That is, the operation units 21 to 25 may be any of the existing operation units used in the die casting machine 20, such as a mold clamping unit, a core unit, a spray unit, a hot water supply unit, an injection unit, and an extrusion unit. , trimming press, robot interface, etc. Furthermore, the present invention is not limited to die casting, and may be applied to control of other casting devices.

The drive element A may be a solenoid, a motor, or the like, as well as a solenoid valve that controls oil pressure or air pressure, and the detection element S may be a sensor that detects a state quantity such as temperature or pressure, or a sensor that detects the operating position. Any limit switch or the like that detects this may be used, and the purpose, operation details, specifications, etc. thereof may be changed as appropriate in implementation.

Furthermore, the specific circuit configuration of the main control device 17 may be set as appropriate; for example, a normal CNC device or the like may be used as appropriate. It is only necessary to provide an input/output circuit suitable for the

Furthermore, an existing operation panel 16 may be used, and similarly, input/output circuits suitable for the signal lines 31 and 43 may be provided.

Furthermore, sub-control devices 11 to 15, 41,
Reference numeral 42 denotes an input/output circuit suitable for the signal lines 31 and 43, and a power adjustment circuit that adjusts the power obtained from the power supply lines 32 and 44 based on an operation command to drive the drive element A of each operation unit 21 to 25. , and a conversion circuit that appropriately converts the signal from the detection element S of each of the operation units 21 to 25.

Further, the signal lines 31 and 43 may be provided with a control device or the like for multiplex transmission of operation commands and detection signals. The transmission format is arbitrary, and the transmission medium may be appropriately selected from conductor cables, optical fibers, wireless communication, etc.

Further, the form of the signal lines 31, 43 and the power supply lines 32, 44 is not limited to the chain or branched bus connection as in each of the above embodiments; 15, 41, and 42 may be connected individually. Even in this case, wiring for each system leading to each operating unit can be simplified by sharing and multiplexing the wiring for the drive element A and the detection element S.

[0046]

[Effects of the Invention] As described above, according to the present invention,
By dividing most of the wiring system of the control device into signal and power wiring, it is possible to significantly simplify the wiring by sharing the wiring, making installation and maintenance work easier, and reducing costs. It can be realized.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the present invention.

FIG. 3 is a configuration diagram showing a conventional example.

[Explanation of symbols]

10, 40 Control device 11-15, 41, 42 Sub-control device 17 Main control device 20 Die-casting machine 21-25 Operation unit 31, 43 Signal line 32, 44 Power line

Claims (1)

[Claims] 1. A control device for a casting machine configured with a plurality of operation units for performing a casting operation, the main control device outputting operation commands to each operation unit;
a sub-control device that is installed for each predetermined number of operating units and controls the operation of the corresponding operating unit by supplying power from the outside based on an external operating command; and a sub-control device that controls the operating commands from the main controller. A control device for a casting machine, characterized in that it has a signal line for transmitting to the device, and a power line for supplying power necessary for the operation of each operation unit to a sub-control device.